"This clearly remains serious and troubling for our City. The Sheriff, one of our top law enforcement officials, has now pleaded guilty to an unexpected and very serious charge that has introduced a new set of legal issues that must be thoroughly reviewed. I am working with legal counsel to review the facts and determine what options are available to me under the City charter," Lee said in a statement.

He also said he understands the "troubling nature that this guilty plea raises, given the Sheriff’s role in overseeing and incarcerating criminals in our county jails."

As mayor, Lee has the power to suspend an elected official for misconduct. He can also initiate removal proceedings.